Trail Running calendar near Builth Wells 2025-2026

Preseli Beast is a circular off road fell race from Maenclochog around the Preseli hills, with steep climbs, boggy trails and coastal views. Choose 24 mile or 11 mile routes; entries open December 2025 for May 9 2026.

Apocalypse Ultramarathon in Church Stretton on 9 May 2026 offers 10 to 50 mile options across four scenic but brutal loops. With a 16 hour limit, rolling food at HQ and limited places this is a bold endurance challenge.

Guided recce of the Paddy Buckley leg from Nantmoor to Beddgelert, 15 km with 1,580 m ascent across beautiful Snowdonia ridges. Small groups led by mountain leaders make this a great chance to test your legs and enjoy epic views.

Ultra Trail Snowdonia by UTMB returns to Eryri in mid May, featuring technical mountain trails and international fields. Four race distances from 25 km to 164 km offer a classic Snowdonia challenge.

On 16 May 2026 choose the OTT Trail Marathon or 10 Mile in the Brecon Beacons, tackling Pen Y Fan and rugged upland trails. Expect epic views, testing climbs and a friendly finishers vibe with a coaster and buff for everyone.

Take on the True Grit Trail Half Marathon on 16 May 2026 for a gritty 13.1 mile test across quarry sections, forestry trails and the scenic Bedford Park. With 50 places available this muddy, wild route rewards finishers with a bespoke medal..

Tackle the Merrell Cannock Chase Challenge on 16 May 2026 at Tackeroo Campsite with 10 km, half or full marathon over scenic off road trails. Limited to 500 entries, enjoy rolling terrain, aid stations, free parking and a finisher medal.

The Shindig in the Shire showcases scenic routes past Ironbridge Gorge and the Iron Bridge, with some climbs to keep it lively. Pick 8, 16 or 26.2 mile courses and enjoy finisher bling, ales and pub food at The Unicorn Inn.

Join the Semington Slog on 16 May 2026 at St Georges School for 10k and 2k routes through the village and along the Kennet and Avon Canal towpath. Family friendly fun with marshalls, refreshments and a Slog Dog for every finisher.

Take on the Grand Union Canal Race, a nonstop 145 mile ultra from Birmingham to Little Venice along scenic towpaths. Limited to 100 starters with a 45 hour limit, it welcomes supported and unsupported runners for a true canal challenge.

Take on the Rocky at 50 Run Wales, a relaxed 7 hour time challenge at scenic Dare Valley Country Park where you pick your distance from a 3 km minimum up to 50 km. Finishers earn themed medals and enjoy tasty aid station treats.

Tackle 40 miles of the Wales Coast Path from Porthcawl to Penarth, passing golden beaches, cliffs and Ogmore Castle. No time limits and strong support let you relax and earn a Pegasus medal.

Join the Divorce Day Defib Fundraiser for a fun, scenic run from Coalport Village Hall along the Silkin Way and over Ironbridge. Choose 8, 16 or marathon distances and embrace fancy dress with top hats and tiaras to boost spirits.

Run the Brecon Beacons at Midnight Mountain Marathon on June 6, 2026, starting in daylight and finishing under the stars, so some may need a torch. Take part in Marathon, Half Marathon or Bergen pack races and earn a medal and a mug of tea.

Run through two lit railway tunnels beneath Bath on routes from short fun runs to ultra distances. Starts and finishes at family friendly Brickfields Park and each entry supports Sustrans, making it a memorable community day out.

Join the Gnosall 10K for a challenging 11.2 km undulating multi terrain route along canal towpath, woodland and boardwalk, with chip timing and a technical tee for all finishers. Bring the family for a fun run with medals, bouncy castle and..

Tackle 15 miles of the historic Offa's Dyke path around Hay on Wye in a scenic and challenging trail race. Friendly atmosphere and relay option make it perfect for solo runners or teams seeking a memorable summer run.

Run the scenic Cotswold Way from a Cirencester basecamp on 13 and 14 June 2026, choosing a full 100 km loop or shorter trail distances to suit every level. Expect rest stops, GPS tracking, medical and massage teams, plus camping and caterin..

Tackle the legendary Welsh 3000s on a fully guided mountain run across Snowdonia's 15 peaks, including the dramatic Crib Goch traverse. Expect epic scenery, expert guides and a challenging non competitive adventure for experienced runners.

Run the dramatic Cheddar Gorge on trails across the Mendip Hills, from a fun 1k up to a full marathon, with cliff top views, meadows and rugged rock underfoot. Finishers of 6km and longer earn a two sided event medal.